Regardless of their overall well-being, people with diabetes are much more likely than non-diabetics to take a pessimistic view of their personal health. That's according to a nationwide survey conducted by the Centers for Disease Control (CDC). According to CDC researchers, half of diabetic adults in the United States give themselves a self-health rating of "fair" or "poor." Among non-diabetics, the proportion who considered themselves to be in fair/poor health was more than three times lower at roughly 14%. The study's authors emphasized that perceptions about quality of health can significantly affect actual lifestyle behaviors such as diet and exercise.